Support writing back to EXIF file

[kevinsteer]

There are use cases where file manipulation using HTML Canvas are required. However this essentially creates a new file without the original files EXIF data. It would be wonderful if this package could support it, considering the only other package that I know of that offers this is piexifjs, however the docs are awful and its quite lacking in performance.

Have you put any consideration towards this?

[MikeKovarik]

Hello, thanks for reaching out. I have been considering and wanting do to something about this in some form (writing/modifying/replacing) but I unfortunately don't have that much time right now. Rewriting exifr to the form it is in now took me a whole last fall. And I can't dedicate this much time to writing-exif, because it would be a huge feat, even larger that adding support for new file formats. But I'm not closing it because it's still on my mind. related issues: #29 #33